| 河南省皇城山银矿床地球化学特征及成矿模式 |
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| 引用本文： | 任爱琴.河南省皇城山银矿床地球化学特征及成矿模式[J].物探与化探,2006,30(2):133-136,140. |
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| 作者姓名： | 任爱琴 |
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| 作者单位： | 河南省地质调查院,河南,郑州,450007;河南省地质矿产勘查开发局,第三地质调查队,河南,信阳,464000 |
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| 基金项目： | 在撰文中,河南省地调院彭翼和河南省地调三队韩存强两位高级工程师提出了宝贵意见,在此表示衷心感谢! |
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| 摘 要： | 皇城山银矿床产于皇城山组火山碎屑岩层及其基底中。矿床地质、微量元素、同位素及流体包裹体特征等方面综合研究表明,矿床的成矿物质主要间接来源于火山喷发形成的皇城山组火山碎屑岩,成矿介质以大气水占主导地位,为浅成火山热液矿床。认为Ag在浅部碱性环境下主要呈Ag(S2O3)2]3-络合物的形式迁移;地热流体及其循环蚀变作用导致银矿、钠基膨润土矿等系列矿产的形成,并建立了矿床成矿模式。
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| 关 键 词： | 皇城山银矿床 地球化学特征 成矿机理 成矿模式 |
| 文章编号： | 1000-8918（2006）02-0133-04 |
| 收稿时间： | 2005-10-25 |
| 修稿时间： | 2005-10-25 |
GEOCHEMICAL CHARACTERISTICS AND METALLOGENIC MODEL OF THE HUANGCHENGSHAN SILVER DEPOSIT IN HENAN PROVINCE |
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| REN Ai-qin.GEOCHEMICAL CHARACTERISTICS AND METALLOGENIC MODEL OF THE HUANGCHENGSHAN SILVER DEPOSIT IN HENAN PROVINCE[J].Geophysical and Geochemical Exploration,2006,30(2):133-136,140. |
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| Authors: | REN Ai-qin |
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| Institution: | 1. Henan Institute of Geological Survey, Zhengzhou 450007, China; 2. No. 3 Party of Geological Exploration, Henan Bureau of Geology for Mineral Exploration and Development, Xinyang 464000, China |
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| Abstract: | The Huangchengshan silver deposit occurs in pyroclastic rock of Huangchengshan Formation and its basement.An integrated study of characteristics of ore geology,trace elements,isotopes and fluid inclusions shows that the ore-forming materials of the ore deposit were mainly indirectly derived from the pyroclastic rock of Huangchengshan Formation formed by volcanic eruption,and that the metallogenic media were dominated by meteoric water.Therefore,the deposit is of the shallow-seated volcanic hydrothermal type.It is held that silver mainly migrated in the form of Ag(S_2O_3)_2]~(3-) complex under the shallow alkaline environment,and that geothermal fluid and its circulation and alteration action led to the formation of a series of mineral resources such as silver deposits and bentonite deposits.A metallogenic model of the ore deposits has been set up in this paper. |
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| Keywords: | the Huangchengshan silver deposit geochemical characteristics ore-forming mechanism metallogenic model |
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